Oilfield hydration unit



FIG. 1 is a top left perspective view of an oilfield hydration unit that embodies the ornamental design;

FIG. 2 is a front elevation view of the oilfield hydration unit;

FIG. 3 is a rear elevation view of the oilfield hydration unit;

FIG. 4 is a left side elevation view of the oilfield hydration unit;

FIG. 5 is a right side elevation view of the oilfield hydration unit;

FIG. 6 is a top plan view of the oilfield hydration unit; and,

FIG. 7 is a bottom plan view of the oilfield hydration unit.

Dashed lines shown in the drawings illustrate unclaimed features of the ornamental design. 

CLAIM The ornamental design for an oilfield hydration unit, as shown and described. 